WO2005040043A3 - Transducer preamplifier and coupling device - Google Patents

Transducer preamplifier and coupling device Download PDF

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Publication number
WO2005040043A3
WO2005040043A3 PCT/US2004/035123 US2004035123W WO2005040043A3 WO 2005040043 A3 WO2005040043 A3 WO 2005040043A3 US 2004035123 W US2004035123 W US 2004035123W WO 2005040043 A3 WO2005040043 A3 WO 2005040043A3
Authority
WO
WIPO (PCT)
Prior art keywords
synthetic ground
coupling
transducer
coupling device
piezo
Prior art date
Application number
PCT/US2004/035123
Other languages
French (fr)
Other versions
WO2005040043A2 (en
Inventor
Ilan Yosef Levine
Edward Roland Behnke
Joshua Edward Behnke
Original Assignee
Advanced Res & Tech Inst
Ilan Yosef Levine
Edward Roland Behnke
Joshua Edward Behnke
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Advanced Res & Tech Inst, Ilan Yosef Levine, Edward Roland Behnke, Joshua Edward Behnke filed Critical Advanced Res & Tech Inst
Publication of WO2005040043A2 publication Critical patent/WO2005040043A2/en
Publication of WO2005040043A3 publication Critical patent/WO2005040043A3/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/45—Differential amplifiers
    • H03F3/45071—Differential amplifiers with semiconductor devices only
    • H03F3/45076—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier
    • H03F3/45475—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using IC blocks as the active amplifying circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/45—Differential amplifiers
    • H03F3/45071—Differential amplifiers with semiconductor devices only
    • H03F3/45479—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection
    • H03F3/45928—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection using IC blocks as the active amplifying circuit
    • H03F3/45968—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection using IC blocks as the active amplifying circuit by offset reduction
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/36—Indexing scheme relating to amplifiers the amplifier comprising means for increasing the bandwidth
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/375—Circuitry to compensate the offset being present in an amplifier

Abstract

An improved system and method for coupling to a sensor for detecting a very wide range of signal frequencies employs a synthetic ground (Synthetic Ground) equal to the DC offset voltage. The synthetic ground Synthetic Ground) is established by the choice of the load resistance that the piezo-electric transducer must drive and the op-amp in the first stage of amplification (103). Novel coupling circuitry is provided to remove the offset, allowing coupling of a piezo transducer to a very broad-band amplifier chain.
PCT/US2004/035123 2003-10-23 2004-10-22 Transducer preamplifier and coupling device WO2005040043A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US51373003P 2003-10-23 2003-10-23
US60/513,730 2003-10-23

Publications (2)

Publication Number Publication Date
WO2005040043A2 WO2005040043A2 (en) 2005-05-06
WO2005040043A3 true WO2005040043A3 (en) 2005-06-02

Family

ID=34520130

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/035123 WO2005040043A2 (en) 2003-10-23 2004-10-22 Transducer preamplifier and coupling device

Country Status (1)

Country Link
WO (1) WO2005040043A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7891015B2 (en) 2007-07-31 2011-02-15 Bruker Nano, Inc. High-bandwidth actuator drive for scanning probe microscopy

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6838935B2 (en) * 2002-10-01 2005-01-04 Oki Electric Industry Co., Ltd. Signal amplifier

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6838935B2 (en) * 2002-10-01 2005-01-04 Oki Electric Industry Co., Ltd. Signal amplifier

Also Published As

Publication number Publication date
WO2005040043A2 (en) 2005-05-06

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